Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near national median SD
Illinois bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
- 7.9%
- Structurally deficient
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges rated 0-4
Structurally Deficient
7.9%
2,186 bridges flagged for repair priority
0.9pp vs national avg 7.0%
Illinois vs national bridge condition
Illinois — Good condition share 41.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Illinois — Structurally deficient share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Illinois (FHWA NBI)
Counties (102)
Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222
Illinois vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.
44
Rhode Island
7.69% top marginal rate
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by composite NBI rating. Each is inspected at least every 24 months.
FAS 1599
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: E FK MAZONRIVER
0.05 MI W CH 16, Grundy, IL
Built 1977 Load: 1.0 t ADT: 1,400
MOOSE RD - TR 240
Structurally DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
CH 26
FairOver: ROBINSON CREEK
2.5 M SW SHELBYVILLE, Shelby, IL
Built 1909 Load: 24.3 t ADT: 250
TR 9
FairOver: STREAM
2.7 MI SE MOWEAQUA, Shelby, IL
Built 1923 Load: 24.3 t ADT: 100
TR 55
FairOver: ROBINSON CREEK
4 MI W FINDLAY, Shelby, IL
Built 1922 Load: 24.3 t ADT: 10
TR 112
FairOver: FLAT BRANCH
3.0 MI SW YANTISVLLE, Shelby, IL
Built 1922 Load: 24.3 t ADT: 75
FAS 642(CH 19)
FairOver: FLAT BRANCH
4.0 M SW YANTISVILLE, Shelby, IL
Built 1950 Load: 24.3 t ADT: 950
FAS 642(CH 19)
FairOver: FLAT BRANCH
7.5 MI E ASSUMPTION, Shelby, IL
Built 1951 Load: 24.3 t ADT: 950
FAS 648(CH 16)
FairOver: LAKE FORK
4 MI W YANTISVILLE, Shelby, IL
Built 1939 Load: 24.3 t ADT: 375
FAS 648(CH 16)
FairOver: MUD CREEK
2.8 MI NW HENTON, Shelby, IL
Built 1939 Load: 24.3 t ADT: 300
FAS 713(CH 15)
FairOver: BECK'S CREEK
0.5 MI S TOWER HILL, Shelby, IL
Built 1939 Load: 24.3 t ADT: 1,050
FAS 1631(CH 9)
FairOver: FLAT BRANCH
0.4 MI S OF SEXON, Shelby, IL
Built 1937 Load: 24.3 t ADT: 350
CH 16
FairOver: TRIB TO FLAT BRANCH
2.9 MI E MOWEAQUA, Shelby, IL
Built 1939 Load: 24.3 t ADT: 150
TR 35 A
FairOver: SORGHUM BRANCH
4.0 MI S MOWEAQUA, Shelby, IL
Built 1939 Load: 24.3 t ADT: 50
TR 35 A
FairOver: LAKE FORK BRANCH
4.1 M NW YANTISVILLE, Shelby, IL
Built 1939 Load: 24.3 t ADT: 75
TR 9
FairOver: STREAM
1.7 MI SE MOWEAQUA, Shelby, IL
Built 1941 Load: 24.3 t ADT: 100
TR 15
FairOver: STREAM
4.5 MI SE MOWEAQUA, Shelby, IL
Built 1939 Load: 24.3 t ADT: 50
TR 21
FairOver: STREAM
5 MI SE MOWEAQUA, Shelby, IL
Built 1956 Load: 24.3 t ADT: 50
TR 37
FairOver: STREAM
3.1 MI NW YANTISVLE, Shelby, IL
Built 1940 Load: 24.3 t ADT: 25
TR 49
FairOver: FLAT BRANCH
3.8 MI W YANTISVLE, Shelby, IL
Built 1939 Load: 24.3 t ADT: 50
TR 58A
FairOver: SORGHUM BRANCH
3.2 MI S MOWEAQUA, Shelby, IL
Built 1939 Load: 24.3 t ADT: 75
TR 58A
FairOver: SORGHUM BRANCH
6 MI S MOWEAQUA, Shelby, IL
Built 1939 Load: 24.3 t ADT: 50
TR 112
FairOver: STREAM
3.2 MI NW YANTISVILL, Shelby, IL
Built 1947 Load: 24.3 t ADT: 50
TR 112
FairOver: STREAM
3.2 MI NW YANTISVLLE, Shelby, IL
Built 1939 Load: 24.3 t ADT: 50
TR 181
FairOver: RICHLAND CREEK
3.2 MI E MIDDLESWRTH, Shelby, IL
Built 1909 Load: 24.3 t ADT: 25
TR 213I
FairOver: STREAM
1.3 MI SW TOWER HILL, Shelby, IL
Built 1909 Load: 24.3 t ADT: 450
TR 225
FairOver: STREAM
1.1 MI NW STRASBURG, Shelby, IL
Built 1909 Load: 24.3 t ADT: 50
TR 413
FairOver: STREAM
NE EDGE HERRICK, Shelby, IL
Built 1939 Load: 24.3 t ADT: 100
FAS 1632(CH 38)
FairOver: STREAM
3 MI SE WINDSOR, Shelby, IL
Built 1959 Load: 24.3 t ADT: 550
TR 76
FairOver: LONG GROVE CREEK
2.1 MI NE MOWEAQUA, Shelby, IL
Built 1950 Load: 24.3 t ADT: 125
TR 58A
FairOver: SORGHUM BRANCH
4 MI S OF MOWEAQUA, Shelby, IL
Built 1909 Load: 24.3 t ADT: 75
TR 181
FairOver: RICHLAND CREEK
3.5 MI E MIDDLSWORTH, Shelby, IL
Built 1909 Load: 24.3 t ADT: 25
TOWN HALL RD/ CH 2
FairOver: REINHARDT SLOUGH
1.2MI E ILL RTE 4, St. Clair, IL
Built 1970 Load: 24.3 t ADT: 350
JEFFERSON RD/ CH 2
FairOver: JACKSON SLOUGH
1.0 MI E ILL 4, St. Clair, IL
Built 1978 Load: 24.3 t ADT: 200
TR 240
FairOver: HOG CREEK
2 MI S ILL 177, St. Clair, IL
Built 1942 Load: 24.3 t ADT: 450
LUNCH RD/ TR 122
FairOver: DOUGLAS CREEK
0.2 MI S. SCHMIDT RD, St. Clair, IL
Built 1923 Load: 24.3 t ADT: 225
PERRIN RD/ TR 264
FairOver: LITTLE SILVER CR
1 MI E IL 4, St. Clair, IL
Built 1957 Load: 24.3 t ADT: 50
"C" STREET
FairOver: RICHLAND CREEK
0.25M W ILL 159, St. Clair, IL
Built 1948 Load: 24.3 t ADT: 850
FAU 9269
FairOver: RICHLAND CREEK
AT 6TH ST, St. Clair, IL
Built 1950 Load: 24.3 t ADT: 3,550
SOUTH THIRD STREET
FairOver: RICHLAND CREEK
0.10 N CLEVELAND, St. Clair, IL
Built 1921 Load: 24.3 t ADT: 550
CH 8
FairOver: SPOON RIVER
NW-10-T14NR6E, Stark, IL
Built 1955 Load: 24.3 t ADT: 100
FAS 208-CH 20
FairOver: SPOON RIVER E BRANCH
NW-10-T14NR7E, Stark, IL
Built 1958 Load: 24.3 t ADT: 100
TR 20
FairOver: STREAM
NW-32-T13NR5E, Stark, IL
Built 1900 Load: 24.3 t ADT: 50
TR 135
FairOver: CAMP RUN
N.CTR-9-T12NR7E, Stark, IL
Built 1965 Load: 24.3 t ADT: 10
ILL 26
FairOver: CEDAR CREEK
N EDGE OF CEDARVILLE, Stephenson, IL
Built 1981 Load: 24.3 t ADT: 5,400
W. OAK STREET ROAD
FairOver: BR OF YELLOW CREEK
1.5 MI W OF LENA, Stephenson, IL
Built 1950 Load: 24.3 t ADT: 100
TOWN HALL RD
FairOver: BR OF PECATONICA RIV
0.5 MI E ILL RT 75, Stephenson, IL
Built 1954 Load: 24.3 t ADT: 75
BOLTON RD
FairOver: BR OF PRESTON CREEK
3.0 MI W OF FREEPORT, Stephenson, IL
Built 1945 Load: 24.3 t ADT: 750
FAS 61 W. McConn.R
FairOver: BRANCH SPRING CREEK
4.0 MI NE LENA, Stephenson, IL
Built 1940 Load: 24.3 t ADT: 725
NORTH DAKOTA RD
FairOver: BRANCH CEDAR CREEK
3.0 MI N DAKOTA, Stephenson, IL
Built 1943 Load: 24.3 t ADT: 475
N IMOBERSTEG RD
FairOver: BR OF RICHLAND CREEK
1.0 MI N OF ONECO, Stephenson, IL
Built 1970 Load: 24.3 t ADT: 100
W PIN HOOK ROAD
FairOver: WADDAMS CREEK
0.7 MI E OF XRDS RD, Stephenson, IL
Built 1954 Load: 24.3 t ADT: 75
Showing 5,551-5,600 of 27,743 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |